Dig Deeper into Hiyori Kazane

A second-year student at Sorami High, Hiyori Kazane becomes friends with Tomoki Sakurai and possesses strong feelings for him. Unknown to Tomoki, not everything is what it appears to be with Hiyori. She has a secret only Eishiro and the Angeloids Ikaros, Nymph, and Astraea know regarding her real identity.